Milling attachment for lathes.



H. W. lAY.

MILLING ATTACHMENT FOR LATHES.

APPLICATION FILED rss. s'. 1915.

1 ,21 7,949. Patented Mar. 6, 1917.

2 SHEETS-SHEE H. W. JAY.

MILLING ATTAGHMENT FOR LATHES.

APPLICATION FILED FEB.I6,1915.

1217949. Patented Mar. 6, 1917.

2 SHEETS-SHEET 2.

M arte &nu o

a Mm HERMAN w. JAY, or AINSVVORTELNEBRASKA.-

MILLING ATTAC ENT FOR LATI-IES.

Application filedFebruary 1 6, 1915, Serial N o. 8,464.

To all whom it may concern:

Be it known that I, TTEJRMAN JAY, a citizen of the United States,residing at Ainsworth, in the County of Brown and State of'Nebraska,have invented a new and useful Milling Attachment for: Lathes;. and I dohereby declare the-y following to be a full, clear, and enact,description of. the invention, such as will enable others skilled in theart to which it appertains to' make and use the same.

This invention relates to a milling attachment for lathes, and as anobject of the invention it is the aim to provide a holder for themilling cutter, which holder is provided with means to be received bythe tool post of the lathe, so that the holder will move With thecarriage of the lathe, said milling cutter having connections with anoverhanging driven shaft whereby the cutter is not only rotatecl, butthe connec- 'tions are allowed to move longitudinally on said drivenshaft, so as to correspond with the movement of the carriage of thelathe.

Inpractical fields the details of Construction may necessitatealterations, falling within the scope of what is claimed. i

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings:

Figure 1 is a View showing the improved milling attachment as applied toa lathe, and showing its connections with an overhead driven shaft.

Fig. 2 is a vertical sectional view.

F ig. 3 is a sectional view on line 3-3 of Fig. 2.

F igs. 4 and 5 are detail views.

Fig. 6 is a sectional view' of the universal connection 2 1 at rightangles to that shown in Fig. 2.

Fig. 7 shows detail views of the two parts of the holder, illustratingthe teeth of said plates 7 and 8. y

Referring more especially to the drawings, 1 designates the usual formof carriage of a lathe, and is provided with a tool post 3. The millingattachment 1ncludes a holder' 1, which consists of two parts 5 and 6,which are provided with in terengaging circular plates 7 and 8, theengaging surfaces of which are provided with teeth 9. The plate 8 formsan ntegral part of the laterally extending portion 10 of the part 6 (theshank 11 of which is received Specfication of Letters Patent( i PatentedMar. 6.' 1917.

in the socket 12 of 'the tool post of the carrage, so as to move withthe carriage) whereas the plate 7 forms an integral part of the sleevepart 5. The sleeve part 5 is constructed with a laterally extendingscrew shanl( 13, which extends through the lateral portion 10, andisprovided with a nut 14: and a lock nut 15, for part 5 in adjustedpositions relative to the lateral portion 10. In. other words, byloosening the nuts, the positions of the sleeve parts nay be changed,and the teeth of said plates 7 and 8 act to prevent movement of thesleeved part. The sleeve part 5 is split, as shown, and is formed withlateral ears 16, to receive the set bolt 17 so as to clamp the sleevepart firmly to the 'holding casing 18,-in which the shaft -19 has abearing. Onthe end'20 of the shaft 19 a milling tool 21 may be Securedby a set bolt 22, while the end 23 of the shaft has a universalconnection 24 with the tubular shaft 25, which in turn is splined orfeathered at 26 to the shaft 27, the upper end of which has a hearing inthe T-shaped casing 28. The upper end of the shaft 27 has mountedthereon a worm wheel 29, which meshes with the' worm 30, which is splnedor feathered, as shown at 31 to the horizontally disposed overhangingdriviug shaft 32, which is driven by means of the pulley 33 which hasbelt connections, for receiving power from -any suitable source (notshown). This pulley 33 is loose upon the shaft 32 and by means of thesuitable conventional clutchmechanism 34:, the pulleyisthrown in clutchwith the shaft 32. As the shaft 32 is driven, the milling cutter 21 isoperated, through the worm wheel and worm connection, and' by means ofthe connections between the two part holder (which is carried bythe toolpost of the carriage of the lathe) and the overhanging driving shaft 32,said holder and said connections may move with the carriage of thelathe, and upon the shaft 82. By loosening the nuts 1 1 and 15 the part5 of the holder may be adjusted so that the casing 18 will assume anangle relative' tothe part 6, so that the cutting edge' of the milling'tool may be held in a different 'position to that shown in the drawing,and when the casing -18 is so disposed, movement is still imparted tothe milling tool, even though the shaft 19 extends on an angle, owing tothe universal connection 24. Furthermore, by means of holding the sleevei the splined or feathered eonnections between the tubular shaft and theshaft 27, the holdeimay be adjusted toward and from the shaft 32. i

The invention having been set foi'th, What is claimed as new and usefulis1- n combination With a movable iathe carriage, a holder Securedadjustably in the tool post of the earrage, said holder comprising twoparts, one part being ca-ried by the tool post and having'at one end anupwardly eXtending portion provided With a toothed plate, the other partcomprising a spiit sleevehaving a tootheci plate to inte'el'gage Withthe teeth of the first plate, the second' plate having means extending`through the upwztrdly extending portion and Copies of this patent may beobtaine for five cents each, by addressng provided With elements to holdthe two piates in adjusted positions relative to each other, zt casingin the sieeve, means for clamping the split sleeve about the casing, ashefit 'evoluble in the casng and having` a cutter at its lower end, anda driving mechansm having universal, Vertical and transversely movableconnections With the other end of the shaft.

In testimony'whereof I have signed my name to this specification in thepresence of two subsc'ibing witnesses.

HERMAN KV. J AY.

vVitnesses:

P. WV. MURPHY, A. S. KIRKPATRICK.

the Commssoner of Patents,

Washington, D. C.

